/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.pig.penny.apps.ci;

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;

import org.apache.pig.data.Tuple;
import org.apache.pig.penny.Coordinator;
import org.apache.pig.penny.Location;
import org.apache.pig.penny.PhysicalLocation;



public class CICoordinator extends Coordinator {
    
    private Map<PhysicalLocation, Tuple> latestTuples = new HashMap<PhysicalLocation, Tuple>();        // latest tuple from each monitor agent

    public void init(Serializable[] args) {
    }
    
    public Object finish() {
        return latestTuples;            // return latest tuples
    }

    public void receiveMessage(Location source, Tuple message) {
        // keep track of latest tuple from each monitor agent
        latestTuples.put((PhysicalLocation) source, message);
    }

}
